Listeners don't work with functional components

[domoratskii]

Version

1.0.0-beta.25

Reproduction link

https://codesandbox.io/s/r7rn4q2qo

Steps to reproduce

1. Run test
2. Open sandbox console

What is expected?

Test passed

What is actually happening?

[Vue warn]: Invalid handler for event "click": got undefined.

---

How do I can pass them on?

[domoratskii]

It works.

import { shallowMount } from "@vue/test-utils";
import BaseButton from "../BaseButton.vue";

describe("BaseButtonIcon", () => {
  it("calls item-click when button is clicked", () => {
    const stub = jest.fn();
    const wrapper = shallowMount(BaseButton, {
      context: {
        props: {
          text: "click"
        },
        on: {
          'item-click': stub,
        },
      },
    });
    const button = wrapper.find("button.base-button-inc");

    button.trigger("click");

    expect(stub).toHaveBeenCalled();
  });
});